Air-chamber for pumps.



N. 0. FLEMING.

AIR CHAMBER FOR PUMPS. APPLICATION FILED APR.23- um.

Patented Jan. 7 1 9 jhoe/zZar v I #617725; e'if zezmwg y t i v Iillustrative ripnlimtion mad Q3, 1211?! T0 (El wlmm ma 3, eonce-m:

i1; kmwn that 1', Nmmnm l a, citizen 0:5 mm United States, HuntingtonYam, in the. counijy' Fimmm gelas mm Sta"? 0f Qzflifornia, i122 a new a16 us m hamber i 01 In the operatim; of phmgez'p tmularly those ham: :1sin 21156 015 flow warms ml min) during 0: Th cycle 0: tbs 11111;) Q1355variation in he Me. of flew prmw'zl' ts the pump fmmhaving a largecapacity, asthe column ofvwter must be azcelemted and stopped during mwheke, and tha "9311:- timml leases m; the nmximum speed. likely to homin@XCQQSiYQ. In my wantim pmflrk: :aneans fur p winning relativzzlyqmiiorzu diswhzn'ge from the top of 31m pump sohumz awn whore singleacting pumps am 115ml t1 eqmflimtion 03;? {ha pressure bah acvomp im nedby the use of an ah cylindar .locutcd ine'qe the pump 001m ,1.

. A furifher .object of my iuveniian fi provide means by which the@pemim 0i? :1 pump can tell at any Hm I; the epbh. 0ft Waim in H12 wsalLReferring); to the drawings, which are for mypo only ihei ing positions.

F '5 1S 2 :smnlzu 590M011 showing: the;

method. of removing @112 various @zm'ts izim'n the Wall,

by the line l: ---3 1 and r 4; is a section through & conventiomi formof a flaws-Way valve In the cmbedi'n'zent o? my iXSfv'fi-ntifiil in thedmWimgs a casing}; 11 :hsvm. in the well to which the ixwmtimsi'is tobe: pfied. Securefi on suubze fmuziiations, means of belts 12:. is asole phi-a on which a discharge "2? 1 rests, "(his discharge T beingSusie-11m down by means of bolts 15. Seemed in the lower end of thedischarge i by mans thread 16 is pump Column 1); and swam-1S pump Pclumn17, by mama a pump barrel 19 in Whifih :1

w .1. mm. All

21123 be a anism of 3 l1 inie 21 Pig. J A val v-t-a 2mm 33 .9 wmwcis ofwater rather than in terms of pounds per square inch. I This suhmergencecan lie instantly read in feet; and the length of the pipe. 46 beingknown. the depth of water in the well can he, readily ascertained. Thepiston Ztlheing actuated through the pump rods 21. a variable water flowis prodm-ed upwardly through the pump column 17. and a variable pressureis produced at the hottom of the air retainer 37. As this pressureincreases on the upward stroke of the piston 20, the air in the spaceit) is compressed and the flow through the space hetween the airretainer 27 and the pump rods 2! is reduced. this How heing,considerably less than the maximum tlow which \vould occur with no airin the space 40. 20 stops its motion or starts to more downwardly, theair in the spaceltl expands, to; cing the water level down\\'ardl andinnintainin't, the flow upwardly through the interior ot the airretainer 27. It will there fore be seen that the air in the space it) iscon'ipressed on the up stroke and expands 'on the down-stroke, therehynniiutaiuing. a

relatively unitorm How of water from the pump. then it is desired toremove the piston 20 from the well, the cover 22 is taken off and thebolts 23 are removed,therehv re leasing theclamping ring 31. The pumprods 21 being then raised the air retainer rod passing through said pumpcolumn; an

air retainer in the impel-portion oi said pump column and around saidpump rod; an 'air retainer ring secured to the upper end of said airretainer; a discharge T seeured to the upper end of the pump column;

a cover secured on'the top of said discharge T and means Independent o'tsaid cover for Whenever the piston forcing said air retainer ring intoair tight relationship with a seat formed in said dis charge T.

2. In a pump, a pump column; a :pump rod passing. through said pumpcolumn: an air retainer in the upper portion of said pump column andaround said pump rod; means for supplying compressed air to the spacehetween said air retainer and the upper end of the pump column; an airretainer ring secured to the upper end of said air retainer; a dischargeT secured to the upper end of the pump column; a cover secured on thetop of said discharge T; and means independent ot said cover for forcingsaid air retainer ring into airtight relationship with a seat formed insaid discharge T.

3. In a pump, a pump column; a pump harrel secured to the lower end'ofsaid pump column; a piston sliding freely in said pump barrel; a stringof pump rods passing through said pump column and secured to saidpiston; an air retainer surrounding said rods and projecting downwardlyinto said pump column. said air retainer having an inside diameterconsiderably less than the outside dianu-ter ot'said piston; and meansfor detm'hallly securing the upper end of said air retainer in air tightrelationship with the said pump column.

A combination as in claim 3 in which said means comprises -a discharge Tinto which the upper end ot'said pump column is secured in air tightrelationship; a seat formed on said T; van air retainer ring secured tothe upper end of said air retainer;

